We create intuitive, user-centric designs that simplify workflows, enhance usability, and boost conversions — ensuring your web app is both functional and future-proof.
Designing products for startups backed by
and more
phenomenon studio IN NUMBERS
98%
customer satisfaction rate
35%+
boost in conversions after redesign
60+
top-tier designers and developers on board
500M+
investments raised by our clients
Challenges
We design web apps that solve
problems, not create them
Is your web app frustrating users with poor navigation and low engagement?
A confusing interface, slow load times, and lack of intuitive design can drive users away. We create seamless, user-centric experiences with clear navigation, smart UI patterns, and accessibility best practices to keep users engaged and encourage retention.
Are inefficient workflows slowing down productivity and frustrating your team?
Poorly structured web app can lead to wasted time, errors, and user frustration. We optimize workflows by reducing friction, streamlining interactions, and incorporating automation where needed—allowing users to complete tasks faster and more efficiently.
Struggling with low conversions and high drop-off rates?
If users abandon your web app before taking key actions, your business is losing potential revenue. We apply data-driven design strategies, psychological triggers, and A/B testing to create high-converting user journeys that guide visitors seamlessly toward sign-ups, purchases, or other critical goals.
Tailored Web app Solutions for Your Business
Industry-specific
web app solutions
01
SaaS
Scalable applications thoughtfully designed to enhance user engagement, streamline and optimize workflows, and effectively support subscription-based business models.
02
EdTech
Interactive learning platforms with student dashboards, virtual classrooms, and AI-powered personalization for better educational experiences.
03
Web3 & Blockchain
Decentralized applications (dApps) featuring secure transactions, transparent smart contracts, and intuitive user interfaces for blockchain-based projects.
04
FinTech
Financial solutions with seamless transactions, AI-driven analytics, and compliance-ready UI/UX to improve trust and efficiency.
05
Real Estate
Intuitive property listing platforms with virtual tours, mortgage calculators, and CRM-integrated solutions for agents and buyers.
06
Logistics & Supply Chain
Web apps designed for real-time shipment tracking, automated inventory management, and predictive analytics for supply chain optimization.
Benefits of a Professionally Designed Web app
Why should you choose our web app design agency?
User-centric approach
We put your users at the heart of the design process. By conducting in-depth research, usability testing, and data-driven decision-making, we craft intuitive web apps that enhance user experience and drive conversions.
Seamless collaboration & transparency
We integrate smoothly with your team, offering real-time updates, direct communication channels, and a collaborative workflow. This ensures you’re involved in every step, with full transparency and control over the process.
Design with development in mind
Our designs are not just visually stunning—they are built for seamless implementation. We create scalable, development-ready designs that follow UX best practices, ensuring smooth integration, faster development cycles, and reduced rework.
Mid-level and senior experts
Our team consists of seasoned web designers with 7+ years of experience, specializing in your industry. This expertise ensures your web app is strategically designed to meet both business goals and user expectations.
Proven trust and high satisfaction
We prioritize long-term relationships and client satisfaction. With a 98% satisfaction rate, our commitment to quality, reliability, and results-driven design has made us a trusted partner for businesses worldwide.
OUR WEB APP INTERFACE DESIGN PROCESS
How our
web app agency
structures design to avoid rework and ship your product faster
Before you design screens, you need a system. We start with business logic, map real-world user behaviour, and design web apps that don’t need to be rebuilt six months later. Here’s how that looks.
Stakeholder interview
01
Defining your goals, users, and technical context
At our web app agency, we start with your goals, team structure, and tech context to shape how the product should work.Key steps
Key steps:
Business goals and platform vision
Internal workflows and technical setup
User types and access logic
Deliverables
Stakeholder briefproduct context summary
Market & user research
02
Grounding UX in category logic and user expectations
We review what similar tools are doing — and what users expect — to guide early layout, flow, and feature decisions.
Key steps:
Competitive UI/UX audit
Category-specific design benchmarks
Early user behavior mapping
Deliverables
UX auditcompetitor feature report trend snapshot
Feature breakdown
03
Defining what to design now—and what can wait
Together, we organize features by business value and feasibility to shape your mobile app and web deign MVP or V1 scope.
Key steps:
MVP vs. roadmap features
User-impact scoring
Release phasing plan
Deliverables
Feature maprelease pipelineproduct logic outline
Userflow & wireframes
04
Structuring how users navigate your web app
Our web app agency maps flows across user roles and creates wireframes that bring logic, layout, and interactions into focus.
Key steps:
End-to-end user journeys
Key screens by user type
Early interaction logic
Deliverables
Multi-role user flowsnavigation modelsscreen wireframes
Visual direction & moodboarding
05
Setting the tone with focused web UI design services
We explore visual styles and UI tone to define what your product should look and feel like before full web design begins.
Key steps:
Colour, type, and spacing systems
Visual mood samples by industry
UI style cues mapped to product goals
Deliverables
MoodboardDesign concepts
Mockups development
06
Designing all screens for dev-ready output
We deliver complete web application GUI design: every screen, state, and breakpoint built for clarity, consistency, and clean handoff.
Key steps:
Dev-aligned screen designs
Modular UI components
Variants for different screen sizes
Deliverables
Figma files with specsUI componentsdev-ready mockups
Testing & validation
07
Reviewing how the web-based app design performs before you build it
We test flows via clickable prototypes and refine web designs based on feedback from users and stakeholders.
Key steps:
Usability testing
Stakeholder reviews
UX adjustments before dev
Deliverables
Feedback reportUX refinementsflow fixes
Mockups hand-off
08
Supporting your team during build and QA
We prep final files, stay available for dev questions, and review what’s built to catch mismatches early.
Key steps:
Figma kits with tokens and specs
Dev walkthroughs if needed
Post-build UI checks
Deliverables
Dev specscomponent documentationQA support notes
Ready to get a website that works, scales, and converts?
We have seen a significant improvement in terms of mobile friendliness and the general flow of
the system. I believe this has contributed significantly to the growth of our business. Many
thanks, Phenomenon.
#UX Audit #Product redesign #Web development #Team extention
Isora – optimizing governance, risk & compliance for top institutions
HIPAA- and GDPR-certified expertise for Healthcare and beyond.
Since 2019, we’ve gained HIPAA and GDPR certifications and industry recognition, delivering hundreds of products in Healthcare, SaaS, FinTech, and EdTech — where compliance and UX go hand in hand.
Design that lasts beyond trends
We don’t chase fads. We build digital products that stay relevant.
Our work looks sharp today and stays usable tomorrow — designed around long-term value, not short-term gimmicks. Scalable systems, brand consistency, and smart UX that grows with your product.
Design that’s developer-ready
We design for implementation, not handoff.
Every component is built with devs in mind: design tokens, accessibility, reusability, and real-world constraints. We collaborate with your team, reuse existing elements, and stay involved until everything’s live.
Local presence. Global delivery
Work directly with the doers — not a chain of account managers.
Collaborate with UX strategists in North America, while our senior design and development teams in Europe deliver fast, consistent results. We integrate into your tools and workflow, working as part of your team — from a single embedded designer to a full product squad.
Not only is the team extremely communicative, their work is exceptional. I have never worked with a team so talented while also being competitively priced and communicative.
KlickEx Team
George Fry
Founder at Neap
The quality of the designs is fantastic. Phenomenon Studio works at speed and is extremely punctual with timelines. They deliver top-notch outcomes with exceptional designs.
Andre Guerra
Co-Owner at RADCAT Design
Kevin Alvarez
Founder & General Partner, Predictive
Phenomenon Studio's ability to translate concepts and rough design mock-ups into high-fidelity assets, designs, and visuals was very impressive. The goal was to maintain simple elegance in the design aesthetic, and they did it very well.
Designing a web app is a multifaceted process that requires a deep understanding of user needs, behaviors, and goals. It involves creating intuitive interfaces that are not only visually appealing but also functional, ensuring users can navigate the app easily and achieve their desired outcomes without frustration. Our web app UI design services take a user-centered approach, prioritizing usability, accessibility, and engagement. We focus on crafting designs that enhance the overall user experience by streamlining workflows, improving interaction design, and ensuring the app performs seamlessly across different devices and platforms.
02
What are web app design patterns?
Web app design patterns are standardized, reusable solutions to common design challenges that developers and designers face when building applications. These patterns provide a framework or guideline for addressing issues such as navigation, user input, data display, and interactivity. By using design patterns, teams can ensure a consistent and intuitive user experience across the application, while also streamlining the development process. They help reduce the time spent on solving recurring problems, promote best practices, and improve usability by following familiar design conventions. Examples include hamburger menus for navigation, modals for alerts or additional information, and infinite scrolling for content-heavy interfaces. Adopting design patterns can significantly enhance both the efficiency of development and the overall quality of the user experience.
03
Why is custom web app design important?
Custom web app design goes beyond a one-size-fits-all approach, tailoring the application to meet your specific business needs and goals. By focusing on your unique requirements, it ensures that every feature and functionality aligns with your objectives, improving efficiency and productivity. Additionally, custom design provides a personalized user experience that resonates with your target audience, making it easier to engage and retain customers. This distinct approach not only enhances usability but also helps differentiate your brand from competitors, giving you a competitive edge in the market. With custom web app design, you can create a solution that grows with your business and delivers long-term value.
04
How does web design for mobile apps differ from web apps?
Web design for mobile apps focuses primarily on creating interfaces that are optimized for touchscreens and smaller screens. This requires an emphasis on simplicity, large touch targets, and intuitive navigation to cater to mobile-specific user behaviors, such as swiping, tapping, and scrolling. Mobile app design also considers the limitations of mobile devices, like smaller processing power and screen size, ensuring the interface is lightweight and responsive. On the other hand, web app design encompasses a broader range of devices, including desktops, tablets, and smartphones. It needs to account for varying screen sizes, input methods (such as a mouse, keyboard, or touch), and device capabilities. This means web app designers often prioritize responsive design techniques, creating interfaces that adapt seamlessly to different screen sizes. Additionally, web apps may rely more heavily on browser interactions and require considerations for cross-browser compatibility and performance. In essence, while mobile app design is more narrowly focused, web app design demands flexibility to accommodate diverse user environments.
05
What is web app UI design?
Web app UI design is the process of creating the visual and interactive elements of a web application to ensure it is both functional and appealing to users. This involves designing layouts, typography, color schemes, buttons, and other interface components that make up the user experience. The goal is to create an intuitive design where users can easily navigate and interact with the application without confusion. A well-designed UI not only focuses on aesthetics but also prioritizes usability, accessibility, and responsiveness to provide a seamless experience across different devices and screen sizes. Ultimately, great web app UI design enhances user satisfaction and supports the app’s overall functionality.